Flash Furniture HERCULES Series Big & Tall 400 lb. Rated Black Leather Swivel Task Chair with Adjustable Arms Contemporary Big & Tall Office Chair 400 lb. Weight Capacity Mid-Back Design Built-In Lumbar Support. Tilt Lock Mechanism Tilt Tension Adjustment Knob 3'' Thick Foam Padded Seat. Waterfall Seat promotes healthy blood flow 23'' Wide Seat. Swivel Seat Minimum Arm Height From Seat-6 Inches. Maximum Arm Height From Seat-8.750 Inches. Minimum Arm Height From Floor-25.500 Inches. Maximum Arm Height From Floor-32.500 Inches Minimum Seat Height-19.250 Inches. Maximum Seat Height-23 Inches